USER`S GUIDE

USER’S GUIDE
94150
Humidity and Temperature
USB Datalogger
REC
ALM
FEATURES
Memory for 32,000 readings
(16000 temperature and 16,000 humidity
readings)
Dew point indication
Status Indication
USB Interface
User-Selectable Alarm
Analysis software
Multi-mode to start logging
Long battery life
Selectable measuring cycle:
2s, 5s, 10s, 30s, 1m, 5m, 10m, 30m, 1hr, 2hr, 3hr,
6hr, 12hr, 24hr
DISCRIPTION
1. Protective cover
2. USB connector to PC port
3. Start button
4. RH and Temperature
sensors
5. Alarm LED(red/yellow)
6. Record LED(green)
7. Mounting clip
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ersion 2.0, 07/07
LED STATUS GUIDE
Green LED
REC
ALM
Red/Yellow LED
LED STATUS GUIDE
LEDs
REC
ALM
Indication
Both
OFF
active
REC
ALM
LED
Action
lights
Logging not
Or
Low
Battery
One green flash
every 10 sec. *
Logging,
no
alarm condition**
Green
double
flash every 10 sec. *
Delayed start
Start logging
Replace battery
and
download
the data
To start, hold the
start button until
Green
and
Yellow
LED
flash
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ersion 2.0, 07/07
REC
REC
ALM
ALM
Red single flash
every 10 sec. *
-Logging,
low
alarm for RH***
Red
double
flash every 10 sec. *
-Logging,
high
alarm for RH***
logging, it will
stop
automatically.
No data will be
lost.
Replace
battery
and
download data
Red single flash
every 60 sec.
Low
Battery****
Yellow single flash
every 10 sec. *
-Logging,
low
alarm for TEMP***
Yellow double flash
every 10 sec. *
-Logging,
high
alarm for TEMP***
Download data
Yellow single flash
every 60 sec.
Logger
memory full
* To save power, the logger’s LED flashing-cycle can be
changed to 20s or 30s via the supplied software.
** To save power, alarm LEDs for temperature and humidity
can be disabled via the supplied software.
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ersion 2.0, 07/07
***When both temperature and relative humidity readings
exceed alarm level synchronously, LED status indication
alternate every cycle. For example: If there is only
one alarm, the REC LED blinks for one cycle and
alarm LED will blink for next cycle. If there are two
alarms, REC LED will not blink. First alarm will
blink for first cycle and the next alarm will blink for
next cycle.
****When the battery is low, all operations will be disabled
automatically. NOTE: Logging automatically stops when
the battery weakens (logged data will be retained). The
supplied software is required to restart logging and to
download logged data.
***** To use the delay function. Run the datalogger
Graph software, click on the computer icon on the
menu bar (2nd from left) or select LOGGER SET
from the LINK pull-down menu. The Setup window
will appear, and you will see there are two options:
Manual and Instant. If you select the Manual
option, after you click the Setup button, the logger
won't start logging immediately until you press the
yellow button in logger's housing.
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ersion 2.0, 07/07
SPECIFICATIONS
Relative
Humidity
Temperature
Dew
point
Temperature
Logging rate
Overall Range
Accuracy (0 to 20 and
80 to 100%)
Accuracy (20 to 40
and 60 to 80%)
Accuracy(40 to 60%)
Overall Range
Accuracy(-40 to -10
and +40 to +70℃)
Accuracy(-10 to +40
℃)
Accuracy (-40 to +14
and 104 to 158℉)
Accuracy(+14 to +104
℉)
Overall Range
0 to 100%
±5.0%
±3.5%
±3.0%
-40 to 70
℃（-40 to
158℉）
±2℃
±1℃
±3.6℉
±1.8℉
-40 to 70
℃（-40 to
158℉）
Accuracy(25℃, 40 to ± 2.0 ℃
100%RH)
(±4.0℉)
Selectable sampling interval: From
2 seconds up to 24 hours
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ersion 2.0, 07/07
Operating
temperature
Battery type
Battery life
Dimensions/We
ight
-35 to 80℃（-31to 176℉）
3.6V
lithium(1/2AA)(SAFT
LS14250, Tadiran TL-5101 or
equivalent)
1 year(typ.) depending on logging
rate, ambient temperature & use of
Alarm LEDs
101x25x23mm (4x1x.9”)/ 172g
(6oz)
BATTERY REPLACEMENT
Only use 3.6V lithium batteries. Before replacing the
battery, remove the model from the PC. Follow
diagrammatic and explaination steps 1 throught 4
below:
1. With a pointed object(d.g. a samll screwdriver or
similar), open the casing. Lever the casing off in
the direction of the arrow.
2. Pull the data logger from the casing.
3. Replace/Insert the battery into the battery
compartment observing the right polarity. The
two displays briefly light up for control
purposes(alternationg, green, yellow, green).
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ersion 2.0, 07/07
4. Slide the data logger back into the casing until it
snaps into place. Now the data logger is ready for
programing.
NOTE:
Leaving the model plugged into the USB port for
longer than necessary will cause some of the battery
capacity to be lost.
1
3
2
4
WARNING: Handle lithium batteries
carefully, observe warnings on battery
casing. Dispose of in accordance with local
regulations.
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ersion 2.0, 07/07
Sensor Reconditioning
Over time, the internal sensor may be compromised
as a result of pollutants, chemical vapors, and other
environmental conditions which can lead to
inaccurate readings. To recondition the internal
sensor, please follow the procedure below:
Bake the Logger at 80°C (176°F) at<5%RH for 36
hours followed by
20-30°C (70-90°F) at>74%RH for 48 hour ( for
re-hydration)
If permanent damage to the internal sensor is
suspected, replace the Logger immediately to insure
accurate readings.
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ersion 2.0, 07/07